Steam-generator



(No Model.)

J. B. BOSSLER & S. DJSTAUPFER.

STEAM GENERATOR.

No. 433,442. Patented Aug. 5, 1890.

UNITED STATES PATENT OFFICE.

JOSEPH B. BOSSLER, OF MIDDLETOWN, AND SAMUEL D. STAUFFER, OF MARIETTA,PENNSYLVANIA.

STEAM-GEN ERATO R.

SPECIFICATION forming part of Letters Patent No. 433,442, dated August5, 1890.

Application filed November 29, 1889, Serial No. 331,934. (No model.)

nia, citizens of the United States, have invented certain new and usefulImprovements in Steam-Generators; and we do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

Our invention relates to steam-generators, and has for its objectcertain improvements in construction whereby steam may be generated withgreat rapidity and fuel economized.

The invention will be hereinafter described, and particularly pointedout in the claims.

In the accompanying drawiugs,which form a part of this specification,Figure 1 represents a vertical longitudinal section of alocomotive-boiler provided with our improve ment; Fig. 2, an enlargedtransverse section 011 the line 1'- oc, and Fig. 3 a similar View on theline y y.

Reference being had to the drawings and the letters thereon, A indicatesa boiler; B, the furnace thereof O, the combustion-chamber, and D theuptake.v hen solid fuel is used, the furnace is provided with a grate aof ordinary construction; but liquid or gaseous fuel may be used in thefurnace by pro- Viding it with suitable burners therefor.

\Vithin the furnace are arranged coils of pipe I) c on opposite sidesthereof with their lower ends connected to the watenleg of the boiler,as shown at (l and e, and the upper ends of said coils connect withanother coil f,one end gof which connects with the waterleg, and theopposite end it projects into the steam-space E of the boiler A. Thenumber of coils in the furnace may be varied to suit the conditions ofuse to which the boiler may be applied. Thus, where a large quantity ofsteam is required, the coils shown may be multiplied and placed in suchposition as to most effectively utilize space.

F indicates a coil in the combustion-chamber (l, and one end 4 thereofprojects down in the furnace B and communicates with the water-leg at k,and the opposite end B of the coil projects into the steam-space E.

The products of combustion in their passage from the furnace B throughthe coinbustion chamber 0 to the uptake D completely envelop the coil Fand at the same time impart their heat to the water in the boiler A atm, n, and 0 throughout the length thereof from the furnace to the end ofthe uptake.

The boiler is divided horizontally by the plate 19, and the outer end ofthe steam-space is closed by the plate q, and the usualappurtenances-such as gages, &c., (not shown)-- are provided. By theconstruction shown the several coils are filled with water from theboiler, and each and all of the coils are enveloped by the products ofcombustion in the furnace and in the combustion-chamber, and the steamgenerated in the coils is discharged into the steam-space of the boiler,from which it is drawn in the usual manner.

Having thus fully described our invention, what we claim is 1; In asteam-generator, a series of conical coils arranged transversely acrossa furnace and connected at one end with the Waterspace of the boiler anda horizontal coil in the combustion-chamber between the furnace and theuptake and connected with the water-space of the boiler and all of saidcoils connected with the steam-space, substantially as described.

2. In a steam-generator, a series of conical coils arranged transverselyacross a furnace, a horizontal coil having parallel sides in thecombustion-chamberbetween the furnace and the uptake and connected tothe water and steam space of the boiler, and a water-space surroundingthe furnace and the combustionchamber, substantially as described.

3. In a steam-generator, a series of trans verse conical coils in afurnace connected to In testimony whereof We alfix our signathewater-leg on opposite sides of the boiler, tures in presence of twowitnesses. a vertical conical coil above said transverse coils connectedseparately to the Water-space JOSEPH B. BOSSLER. 5' of the boiler, thetransverse coils connected SAMUEL D. STAUFFER.

to the vertical coil, and the vertical coil connected with thesteam-space of the boiler, and WVitnesses: a horizontal coil in thecombustion-chamber J. A. BAXTRESSER, between the furnace and the uptake,snbstan- JosJI-I. NISLEY.

1o tially as described.

